749953 has 4 divisors (see below), whose sum is σ = 770260. Its totient is φ = 729648.

The previous prime is 749941. The next prime is 749971. The reversal of 749953 is 359947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359947 = 7 ⋅51421.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 121104 = 793^2 + 348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 20269 = 749953 / (7 + 4 + 9 + 9 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10098 + ... + 10171.

It is an arithmetic number, because the mean of its divisors is an integer number (192565).

2⁷⁴⁹⁹⁵³ is an apocalyptic number.

It is an amenable number.

749953 is a deficient number, since it is larger than the sum of its proper divisors (20307).

749953 is a wasteful number, since it uses less digits than its factorization.

749953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20306.

The product of its digits is 34020, while the sum is 37.

The square root of 749953 is about 865.9982678967. The cubic root of 749953 is about 90.8541317205.

The spelling of 749953 in words is "seven hundred forty-nine thousand, nine hundred fifty-three".